CN203452967U - Trash screen for water inlet of water turbine generator set - Google Patents
Trash screen for water inlet of water turbine generator set Download PDFInfo
- Publication number
- CN203452967U CN203452967U CN201320359377.7U CN201320359377U CN203452967U CN 203452967 U CN203452967 U CN 203452967U CN 201320359377 U CN201320359377 U CN 201320359377U CN 203452967 U CN203452967 U CN 203452967U
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- Prior art keywords
- grid sheet
- trash rack
- grid
- water inlet
- cross
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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Abstract
The utility model discloses a trash screen for a water inlet of a water turbine generator set. The trash screen comprises a trash screen frame, a plurality of grid sheets and a plurality of grid sheet fixing plates, wherein the trash screen frame comprises two side beams vertically arranged at two sides of the trash screen frame and at least two crossbeams which are horizontally arranged and of which the two ends are respectively fixed on the two side beams, the grid sheet fixing plates are horizontally arranged, and both ends of the grid sheet fixing plates are fixed on the two side beams. The cross section of each grid sheet is elliptic, and slots, of which the sizes match with that of the short axis of the elliptic cross sections of the grid sheet and the number is identical to that of the grid sheet, are arranged on each grid sheet fixing plate. The grid sheets are vertically inserted in the slots. The trash screen is stable in trash screening performance and reliable in operation, lowers production cost of a company and minimizes environment pollution.
Description
Technical field
The utility model relates to a kind of dirty facility that blocks of hydraulic generator unit water intake, especially relates to a kind of hydraulic generator unit trash rack for water inlet.
Background technique
Water power plant hydraulic generator unit is generally equipped with water intake, in order to stop that korneforos dirt enters generator set, is equipped with trash rack at water intake.At present, the hydroelectric power plant of China is generally all built the middle and lower reaches mountain area in certain river in, middle and upper reaches have again numerous county towns, market town, densely populated, if there are Sediment Siltation and environmental disruption in power station after building up, when unit start generating, due to the effect of current, a large amount of dirts is attached on trash rack grid sheet, and the obstruction on trash rack is main mainly with branch, weeds and Polywoven Bag, foam moulding etc.During annual flood season in 5～October, because reservoir level is lower, river flow velocity is large, and rubbish is mingled with a large amount of silt in half heavy state, adsorbs, is wrapped on trash rack, has stopped that current enter, and has formed trash rack pressure reduction, has reduced productive head.
In order to reduce trash rack pressure reduction, when guaranteeing trash rack safe operation, improve generator operation head, power station was forced in when flood season, unit ebb at night was loaded and shuts down, and utilized dam crest hoist every joint trash rack to be proposed from grid groove clear up.Approximately clean out over one hundred ton of rubbish each flood season, even now can effectively reduce trash rack pressure reduction, guarantees power generating equipment safe operation, but night work labor intensity is large, personal security can not be guaranteed, and the hour number that effectively utilizes of generator set also reduces simultaneously.
The trash rack grid chip architecture of using at present has following defect: (1) grid sheet corner angle are outstanding, and if the cross section of grid sheet is rectangular, resistance to water-flow is large, is easy to korneforos foreign material and is wound around, and causes trash rack to stop up; (2) grid sheet is solid construction, and quality is large, and the high economic benefit of cost is low.
Summary of the invention
The technical problems to be solved in the utility model is: a kind of hydraulic generator unit trash rack for water inlet that resistance is little in water, loss of head is little is provided.
In order to solve the problems of the technologies described above, the utility model adopts following technological scheme:
A hydraulic generator unit trash rack for water inlet, comprises trash rack frame, some grid sheets and some grid sheet fixed plates; Described trash rack frame consists of side bar and crossbeam, and side bar is two, is vertically arranged in the both sides of trash rack frame, at least two, crossbeam, and their equal horizontal arrangement and two ends are individually fixed on two side bars; The equal horizontal arrangement of described grid sheet fixed plate, their two ends are individually fixed on two side bars, it is characterized in that: the cross section oval in shape of described each root grid sheet, on described each root grid sheet fixed plate, have and the draw-in groove that the minor axis dimension of grid sheet cross section ellipse matches and quantity is identical with grid sheet sheet number, these grid sheets snap in this draw-in groove and vertically and arrange.
Described grid sheet is hollow structure.
The position that described grid sheet and grid sheet fixed plate fasten is welded and fixed.
Described grid sheet distance is between any two determined during by Design of Hydraulic Turbine.
The draw-in groove degree of depth on described grid sheet fixed plate be grid sheet cross section ellipse major axis 1/2nd.
The cross section of described side bar is " work " word shape.
The utility model is by making elliptical shape by the cross section of grid sheet, with grid sheet fixed plate, be vertically fixed on trash rack frame table face, the grid sheet of this elliptical shape has streamlined preferably, in water, resistance is little, be difficult for occurring to be wound around with korneforos foreign material blocking, during dirty grid work, the more former trash rack grid of current sheet more easily flows through, and the loss of head of grid sheet is less.Through correlation computations, adopt after oblong cross section grid sheet, loss of head reduces approximately 30%, bearing capacity improves 50%, and every unit was kept to 2 hours due to the average time that trash rack silting is shut down desilting by 4 hours weekly, had created larger economic benefit; The features such as in addition, trash rack of the present utility model is compared with original like product, is guaranteeing under the condition of mechanical strength, has lightweight, foreign material and easily passes through, and the trash rack pressure reduction of formation is little.Therefore, trash rack of the present utility model blocks dirty stable performance, reliable, reduces enterprise's cost of production simultaneously, reduces environmental pollution, and then can obtain good comprehensive benefit.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 be along Fig. 1 A-A to cross-sectional configuration schematic diagram.
The implication of each code name in figure: 1, side bar; 2, crossbeam; 3, grid sheet; 4, grid sheet fixed plate; 5, draw-in groove.
Embodiment
Below in conjunction with accompanying drawing, mode of execution of the present utility model is specifically described.
As shown in Figure 1 and Figure 2, be hydraulic generator unit trash rack for water inlet of the present utility model, comprise trash rack frame, some grid sheets 3 and some grid sheet fixed plates 4; Trash rack frame consists of side bar 1 and crossbeam 2, and side bar 1 is two, is vertically arranged in the both sides of trash rack frame, is one of primary load bearing member of trash rack due to side bar 1, preferably selects I shape section bar to make; Crossbeam 2 is two, can certainly be more than two, and their equal horizontal arrangement and two ends are individually fixed on two side bars 1; The equal horizontal arrangement of grid sheet fixed plate 4, their two ends are individually fixed on two side bars 1, the cross section oval in shape of each root grid sheet 3, on each root grid sheet fixed plate 4, have and the minor axis dimension of grid sheet 3 cross section ellipses matches and 3 numbers of quantity and grid sheet are identical draw-in groove 5, these grid sheets 3 snap in this draw-in groove 5 and vertically arrange, grid sheet 3 is preferably hollow structure, can alleviate the weight of trash rack like this, can also reduce the fabricating cost of trash rack, grid sheet 3 of the present utility model can be selected common roll seamless steel tube ovalisation shape; More firm for grid sheet fixed plate 4 is connected with grid sheet 3, grid sheet 3 is welded and fixed after draw-in groove 5 places fasten with grid sheet fixed plate 4 again.When water turbine is worked, some dirt of korneforos such as less, the shorter plant in bar footpath, soft domestic garbage etc. can innocent passages, Design of Hydraulic Turbine personnel need to find equinoctial point between trash rack loss of head of the present utility model and dirt are on water turbine impact, distance size definite when therefore, grid sheet 3 distance is between any two according to Design of Hydraulic Turbine is made.The degree of depth of the draw-in groove 5 on grid sheet fixed plate 4 be grid sheet 3 cross section ellipses major axis 1/2nd, so both facilitated grid sheet 3 to install, can guarantee again mechanical strength and stability after grid sheet 3 is installed.
While using the utility model, put it into corresponding grid groove and put in place; In the time of need carrying out trash rack desilting, first in standby grid groove, put into standby grid, utilize Transformation Plan of Gantry Crane trash rack of the present utility model to be proposed from grid groove clear up.
In addition, it should be noted that, each parts of the present utility model preferably select respective metal material to make according to operating mode, make it have good mechanical strength, to guarantee that it blocks dirty stable performance, reliable.
Above-mentionedly with reference to embodiment, trash rack of the present utility model is described in detail; illustrative and not restrictive; grid sheet 3 can be made all size size or shape as required; according to concrete Design of Hydraulic Turbine, require and determine; therefore in the variation and the modification that do not depart under the utility model general plotting, all within protection domain of the present utility model.
Claims (5)
1. a hydraulic generator unit trash rack for water inlet, comprises trash rack frame, some grid sheets and some grid sheet fixed plates; Described trash rack frame consists of side bar and crossbeam, and side bar is two, is vertically arranged in the both sides of trash rack frame, at least two, crossbeam, and their equal horizontal arrangement and two ends are individually fixed on two side bars; The equal horizontal arrangement of described grid sheet fixed plate, their two ends are individually fixed on two side bars, it is characterized in that: the cross section oval in shape of described each root grid sheet, on described each root grid sheet fixed plate, have and the draw-in groove that the minor axis dimension of grid sheet cross section ellipse matches and quantity is identical with grid sheet sheet number, these grid sheets snap in this draw-in groove and vertically and arrange.
2. hydraulic generator unit trash rack for water inlet according to claim 1, is characterized in that: described grid sheet is hollow structure.
3. hydraulic generator unit trash rack for water inlet according to claim 1, is characterized in that: the position that described grid sheet and grid sheet fixed plate fasten is welded and fixed.
4. according to the hydraulic generator unit trash rack for water inlet described in claim 1,2 or 3, it is characterized in that: the draw-in groove degree of depth on described grid sheet fixed plate be grid sheet cross section ellipse major axis 1/2nd.
5. according to the hydraulic generator unit trash rack for water inlet described in claim 1,2 or 3, it is characterized in that: the cross section of described side bar is " work " word shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320359377.7U CN203452967U (en) | 2013-06-22 | 2013-06-22 | Trash screen for water inlet of water turbine generator set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320359377.7U CN203452967U (en) | 2013-06-22 | 2013-06-22 | Trash screen for water inlet of water turbine generator set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203452967U true CN203452967U (en) | 2014-02-26 |
Family
ID=50132849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320359377.7U Expired - Lifetime CN203452967U (en) | 2013-06-22 | 2013-06-22 | Trash screen for water inlet of water turbine generator set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203452967U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109209739A (en) * | 2018-11-15 | 2019-01-15 | 湖南红太东方机电装备股份有限公司 | A kind of formula turbine-generator units |
| CN109356116A (en) * | 2018-12-10 | 2019-02-19 | 中国电建集团贵阳勘测设计研究院有限公司 | A kind of the grid slot structure and cleaning method of high trash rack |
| CN111878294A (en) * | 2020-07-30 | 2020-11-03 | 葛佳文 | Ocean current energy power generation floating device |
-
2013
- 2013-06-22 CN CN201320359377.7U patent/CN203452967U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109209739A (en) * | 2018-11-15 | 2019-01-15 | 湖南红太东方机电装备股份有限公司 | A kind of formula turbine-generator units |
| CN109356116A (en) * | 2018-12-10 | 2019-02-19 | 中国电建集团贵阳勘测设计研究院有限公司 | A kind of the grid slot structure and cleaning method of high trash rack |
| CN109356116B (en) * | 2018-12-10 | 2023-08-22 | 中国电建集团贵阳勘测设计研究院有限公司 | Grid groove structure of high trash rack and trash removal method |
| CN111878294A (en) * | 2020-07-30 | 2020-11-03 | 葛佳文 | Ocean current energy power generation floating device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 614900 central control building, Hekou Road, Shawan Town, Shawan District, Leshan City, Sichuan Province Patentee after: Guoneng Daduhe maintenance and installation Co.,Ltd. Address before: 614900 central control building, Hekou Road, Shawan Town, Shawan District, Leshan City, Sichuan Province Patentee before: GUODIAN DADUHE MAINTENANCE & INSTALLATION Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140226 |
|
| CX01 | Expiry of patent term |